#TR25016173, Nancy Liu, Listing office: ReMax Elite Realty

23509 Ridge Line Rd Diamond Bar, CA 91765
Property details
About 23509 Ridge Line Rd
Located in the prestigious 24hr guard-gated “The Country Estates” community, this beautiful proposed contemporary residence that is nestled in a highly sought-after location boasting panoramic city lights and mountain views, is graded and ready for construction to be customized and completed by the new owner. Proposed plans for a stunningly perfect contemporary resort-style estate boasting 5 bedroom suites, 7 bathrooms, and approx. 8,000 sqft of pristine and sumptuous living space situated on 1.59 sprawling acres, this sophisticated modern haven’s offerings would be unlike anything in the community. The immaculate grounds and bountiful amenities—including appealing water features at the elegant main entrance, two exterior balconies, dual professional offices, a lush 8-seat theater, & a gym, a luxurious family rm, living rm - ALL 3 rms with fully openable sliding doors. Incredible luxurious, entertaining backyard boasts a gorgeous infinity edge pool and spa overlooking stunning city light views, BBQ and fire pit areas, and a kids' play area. This estate will offer the possibilities for countless memories. Building plans also include a gourmet chef's kitchen and a service kitchen, featuring a sizable pantry. The upper floor will have the master suite with large his/her closets, enormously lush bathroom, and fully openable sliding doors that lead to an exterior deck. A junior master suite will also feature a walk-in closet and bathroom along with access to an exterior balcony through fully openable sliding doors. The estate will feature a 4-car garage. The existing proposed plans can be modified and changed to the buyers' desire! Don’t miss this chance to custom build your dream home on a fully graded and finished lot! Builder is renowned construction company, Primior JYZ. Asking price includes approved plans, land value, grading, sold as-it-is.
Highlights
Summary
- View: City Lights, Mountain(s), Panoramic
- List Price: $1,699,000
- HOA Amount: $308 Monthly
- Annual Tax Amount: $14,697
- Tax Year: 2024
- Lot: Landscaped, Sprinklers
- Directions: From Grand Ave. gate at Shotgun. Onto Derringer, Right turn onto Ridge Line Rd. Property on R-hand side.
- Lot Size: 1.5884 Acres
- MLS Number: TR25148967
- MLS Name: CRMLS
- Office Name: Country Queen Real Estate
- Office Phone: (909) 374-0299
- Listing Agent: Juliet Chung
Based on information from California Regional Multiple Listing Service, Inc. and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. The data contained herein is copyrighted by CRMLS and is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited.
The information being provided by California Regional Multiple Listing Service, Inc. (“CRMLS”) is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Any information relating to a property referenced on this web site comes from CRMLS. Properties may or may not be listed by the office/agent presenting the information. Real estate listings held by brokerage firms other than this broker are marked with the Internet Data Exchange logo and detailed information about them includes the names of the listing brokers and listing agents. MLS search engine provided by IHR Technology Services. This data is updated every 2 hours. Some properties appearing for sale on this display may subsequently have sold and may no longer be available.
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Last updated on: 7/25/2025, 7:45:29 AM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.
Price information
Property sales
Date | Event | Price |
---|---|---|
Oct 26, 2015 | Home Sold | $1,310,000 |
Oct 29, 2009 | Home Sold | $945,000 |
Oct 29, 1996 | Home Sold | $452,500 |
Nov 18, 1991 | Home Sold | $780,000 |
Nov 18, 1991 | Home Sold | $780,000 |
Nov 10, 1988 | Home Sold | $500,000 |
Tax history
Year | Assessment | Property Tax |
---|---|---|
2024 | $1,199,811 | $14,697 |
2023 | $1,176,286 | $14,296 |
2022 | $1,461,327 | $17,868 |
2021 | $1,432,674 | $17,548 |
2020 | $1,417,984 | $16,998 |
2019 | $1,390,181 | $16,198 |
2018 | $1,362,923 | $15,450 |
2017 | $1,336,200 | $15,450 |
History based on county public records data.
Nearby schools
9
Quail Summit Elementary School
Public District KG-5
0.3 mi
•23330 Quail Summit Dr
9
Maple Hill Elementary School
Public District KG-5
0.9 mi
•1350 Maple Hill Rd
7
Evergreen Elementary School
Public District KG-5
1.6 mi
•2450 Evergreen Springs Dr
School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.
Neighborhood
The neighbors living near this home have an average income of $96,654. Typical income of Diamond Bar, CA residents is between $35k-100k annually. The majority of families are married, no kids. Most residents in this area have post secondary degree education.
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Frequently asked questions
About 23509 Ridge Line Rd
The listing price of 23509 Ridge Line Rd property is $1,699,000.
The property 23509 Ridge Line Rd is land located in Diamond Bar, California, 91765.
Active Listing: 23509 Ridge Line Rd is For Sale (Active/New) which means the seller is accepting offers.
The nearby schools for 23509 Ridge Line Rd are: Quail Summit Elementary School (GreatSchools Rating 9/10), Maple Hill Elementary School (GreatSchools Rating 9/10), Evergreen Elementary School (GreatSchools Rating 7/10), Chaparral Middle School (GreatSchools Rating 9/10), Lorbeer Middle School (GreatSchools Rating 5/10), South Pointe Middle School (GreatSchools Rating 8/10), Diamond Bar High School (GreatSchools Rating 10/10), Diamond Ranch High School (GreatSchools Rating 8/10), Ron Hockwalt Academies (Continuation) (GreatSchools Rating 3/10).
According to the records, the last property tax for 2024 is $14,697 (source: MLS/based on county public records data).
The last sale was on October 26, 2015 for $1,310,000 (source: MLS/tax record).
The property 23509 Ridge Line Rd is 1.588 acres.
This home is located at 23509 Ridge Line Rd in Diamond Bar, CA and zip code 91765 in the The San Gabriel Valley neighborhood. Features: 0 bathroom. It has been listed on Rocket Homes since July 3, 2025 and is currently priced at $1,699,000.
Diamond Bar, CA housing market in June 2025 saw over 12 listings sold above listed price, more than 2 sold at listed price and over 20 sold below. Between May and June 2025, Diamond Bar, CA real estate market has seen increase in the number of listings by 7.1%. In June 2025 median list price was $979,500 and the average listing age was 45 days.